The processes are running on the remote nodes but they don't give the response to the origin node. I don't know why. With the option --mca btl_base_verbose 30, I have the same problems and it doesn't show any message.
Thanks > On Wed, Mar 17, 2010 at 1:41 PM, Jeff Squyres <jsquy...@cisco.com> wrote: >> On Mar 17, 2010, at 4:39 AM, <uriz.49...@e.unavarra.es> wrote: >> >>> Hi everyone I'm a new Open MPI user and I have just installed Open MPI >>> in >>> a 6 nodes cluster with Scientific Linux. When I execute it in local it >>> works perfectly, but when I try to execute it on the remote nodes with >>> the >>> --host option it hangs and gives no message. I think that the problem >>> could be with the shared libraries but i'm not sure. In my opinion the >>> problem is not ssh because i can access to the nodes with no password >> >> You might want to check that Open MPI processes are actually running on >> the remote nodes -- check with ps if you see any "orted" or other >> MPI-related processes (e.g., your processes). >> >> Do you have any TCP firewall software running between the nodes? If so, >> you'll need to disable it (at least for Open MPI jobs). > > I also recommend running mpirun with the option --mca btl_base_verbose > 30 to troubleshoot tcp issues. > > In some environments, you need to explicitly tell mpirun what network > interfaces it can use to reach the hosts. Read the following FAQ > section for more information: > > http://www.open-mpi.org/faq/?category=tcp > > Item 7 of the FAQ might be of special interest. > > Regards, > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
